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Restatement of Previously Issued Consolidated Financial Statements - Schedule of Effect of Correction and Other Adjustments on Previously Reported Consolidated Statement of Operations (Detail)

v3.6.0.2
Restatement of Previously Issued Consolidated Financial Statements - Schedule of Effect of Correction and Other Adjustments on Previously Reported Consolidated Statement of Operations (Detail) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Net revenues:    
Rentals $ 16,488 $ 14,966
Net revenues 18,294 16,552
Gross profit 12,557 11,916
Operating income 414 1,379
Income (loss) before income taxes 129 (873)
Income tax (expense) benefit (88) 354
Net income (loss) $ 41 $ (519)
Net income (loss) per share:    
Basic $ 0.00 $ (0.02)
Diluted $ 0.00 $ (0.02)
As Previously Reported [Member]    
Net revenues:    
Rentals $ 17,238 $ 15,139
Net revenues 19,044 16,725
Gross profit 13,307 12,089
Operating income 1,164 1,552
Income (loss) before income taxes 879 (700)
Income tax (expense) benefit (384) 285
Net income (loss) $ 495 $ (415)
Net income (loss) per share:    
Basic $ 0.02 $ (0.02)
Diluted $ 0.02 $ (0.02)
Adjustment [Member]    
Net revenues:    
Rentals $ (750) $ (173)
Net revenues (750) (173)
Gross profit (750) (173)
Operating income (750) (173)
Income (loss) before income taxes (750) (173)
Income tax (expense) benefit 296 69
Net income (loss) $ (454) $ (104)
Net income (loss) per share:    
Basic $ (0.02)  
Diluted $ (0.02)