CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities attributable to continuing operations:
Net income and comprehensive income	$ 20,170	$ 15,997
Less: Loss from discontinued operations, net of tax	3,017	3,238
Net income from continuing operations	23,187	19,235
Adjustments to reconcile income from continuing operations to net cash provided by operating activities attributable to continuing operations:
Loss on disposal of fixed assets	388	102
Amortization of intangibles	263	124
Depreciation	3,458	2,135
Non-cash compensation expense	7,410	6,371
Deferred income taxes	333	0
Excess tax benefit from stock-based award activity	(5,701)	(485)
Bad debt expense	378	236
Amortization of debt issuance costs	183	0
Changes in current assets and liabilities:
Accounts receivable	(8,565)	(11,805)
Prepaid and other current assets	(2,051)	(756)
Accounts payable, accrued expenses and other current liabilities	(5)	15,272
Income taxes payable	13,261	460
Other, net	(645)	(207)
Net cash provided by operating activities attributable to continuing operations	33,184	31,096
Cash flows from investing activities attributable to continuing operations:
Capital expenditures	(8,017)	(4,265)
Acquisition of a business	(4,500)	(37)
Decrease in restricted cash	2,450	95
Net cash used in investing activities attributable to continuing operations	(10,067)	(4,207)
Cash flows from financing activities attributable to continuing operations:
Payments related to net-share settlement of stock-based compensation, net of proceeds from exercise of stock options	(3,093)	(6,127)
Payment of equity offering costs	(23)	0
Payments of debt issuance costs	(8)	0
Excess tax benefit from stock-based award activity	5,701	485
Purchase of treasury stock	(48,524)	(218)
Dividends	0	(105)
Net cash used in financing activities attributable to continuing operations	(45,947)	(5,965)
Total cash (used in) provided by continuing operations	(22,830)	20,924
Net cash used in operating activities attributable to discontinued operations	(7,220)	(885)
Total cash used in discontinued operations	(7,220)	(885)
Net (decrease) increase in cash and cash equivalents	(30,050)	20,039
Cash and cash equivalents at beginning of period	206,975	86,212
Cash and cash equivalents at end of period	$ 176,925	$ 106,251