Annual report pursuant to Section 13 and 15(d)

Schedule II: Valuation and Qualifying Accounts (Details)

v3.3.1.900
Schedule II: Valuation and Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Allowance for Doubtful Accounts      
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance Beginning of Year $ 1,180 $ 1,141 $ 742
Additions 2,680 1,692 2,045
Deletions 2,196 1,404 1,284
Adjustments   (249) (362)
Balance at End of Year 1,664 1,180 1,141
Allowance for Sales Returns      
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance Beginning of Year 173 134 64
Additions 4,918 3,451 1,770
Deletions 4,725 3,412 1,700
Balance at End of Year 366 173 134
Allowance for Rental Revenue Adjustments      
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance Beginning of Year 2,392 2,115 1,255
Additions 8,543 8,267 6,613
Deletions 6,820 8,239 6,115
Adjustments   249 362
Balance at End of Year 4,115 2,392 2,115
Allowance for Inventory Reserves      
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance Beginning of Year 141 100 98
Additions 89 201 78
Deletions 102 160 76
Balance at End of Year 128 141 100
Allowance for Rental Asset Loss      
Valuation And Qualifying Accounts Disclosure [Line Items]      
Balance Beginning of Year 832 157 77
Additions 498 1,443 292
Deletions 480 768 212
Balance at End of Year $ 850 $ 832 $ 157