4. Long-term debt

Amended and restated credit and term loan agreement

On October 12, 2012, the Company entered into an amended and restated credit and term loan agreement with its current lenders whereby the existing balances and the payback terms were not changed. This transaction did not result in any debt extinguishment losses or gains. The Company did not incur or defer any financing cost directly related to the credit and term loan agreement. Due to the completion of the IPO during the term of this facility, a fee equal to 1% of the facility amount of $120, which was paid to the lenders in March of 2014, and was included in general and administrative expenses in the Company’s Statements of Operations for the current year.

The amended and restated credit and term loan agreement with the Company’s current lenders provides for new borrowings of up to $12,000, secured by substantially all of the Company’s assets. The amended and restated credit and term loan agreement provides for the existing term loan facility for rental assets amounting to up to $3,000 (Term Loan A), a term loan facility for rental assets amounting to up to $8,000 (Term Loan B), a new term loan facility for rental assets amounting to up to $12,000 (Term Loan C), and an accounts receivable revolving line of credit amounting to up to $1,000 based on 80% of eligible accounts receivable, as defined (AR Revolver).

Interest for all the term loans are payable monthly. Principal is payable monthly. Each term loan bears interest at the Base Rate, which is a rate equal to the applicable margin plus the greater of (i) the prime rate, (ii) the federal funds effective rate, as defined in the agreement, plus 1% and (iii) the daily adjusting LIBOR rate, plus 1%. The applicable margins for Term Loans A, B, and C are 1.25%, 2.5% and 2.25%, respectively.

The Term Loan A facility of $3,000 is presented net of principal payments that began in May 2011. The net balances of this term loan facility were $167 and $417 as of March 31, 2014 and December 31, 2013, respectively.

The Term Loan B facility for $8,000 is presented net of principal payments that began in May 2012. The net balances of this term loan facility were $3,111 and $3,778 as of March 31, 2014 and December 31, 2013, respectively.

The Term Loan C facility for $12,000 is presented net of principal payments that began November, 2013. The net balances were $5,166 and $5,666 as of March 31, 2014 and December 31, 2013, respectively. Payment of principal is payable monthly over a period of 36 months starting November 2013.

The AR Revolver expired on October 13, 2013, and was not renewed by the Company. There were no borrowings under the AR Revolver as of and during the three months ended March 31, 2014.

The interest rates were 4.5% for Term Loan A, 5.75% for Term Loan B, and 5.5% for Term Loan C at March 31, 2014 and December 31, 2013. As of March 31, 2014 and December 31, 2013, the Company was in compliance with all covenants of the amended and restated credit and term loan agreement.

As of March 31, 2014, the minimum aggregate payments due under non-cancelable debt are summarized as follows: