CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Consolidated net income (loss)	$ 35,615	$ (24,242)	$ 7,331
Less: Loss from discontinued operations, net of tax	13	7,333	2,646
Income (loss) from continuing operations	35,628	(16,909)	9,977
Adjustments to reconcile income (loss) from continuing operations to net cash provided by operating activities of continuing operations:
Depreciation and amortization	19,114	23,797	19,570
Provision for inventory excess and obsolescence	1,934	832	1,582
Impairment of goodwill and intangible assets		41,442
Share-based compensation	4,387	4,329	5,442
Deferred income taxes	(1,692)	(6,736)	3,886
Earnings from equity-method investment	(2,657)	(2,700)	(1,469)
Gain on disposal of business	(19,629)
Contingent consideration adjustment	430
Non-cash interest expense	935	1,379	965
Other non-cash items	1,408	1,586	1,230
Changes in assets and liabilities which provided (used) cash, excluding effects from businesses purchased or classified as held for sale:
Accounts receivable	(7,526)	3,526	(1,826)
Inventories	(3,338)	(991)	(1,688)
Prepaid expenses and other current assets	902	(527)	854
Income taxes receivable	3,431	(206)	10,848
Accounts payable, income taxes payable, accrued expenses and other current liabilities	2,167	(4,698)	5,958
Other non-current assets and liabilities	(2,065)	(134)	849
Cash provided by operating activities of continuing operations	33,429	43,990	56,178
Cash used in operating activities of discontinued operations	(13)	(1,701)	(6,978)
Cash provided by operating activities	33,416	42,289	49,200
Cash flows from investing activities:
Purchases of property, plant and equipment	(5,552)	(5,415)	(4,777)
Acquisition of businesses, net of cash acquired and escrow recovery	(25,987)	(88,238)	(80,773)
Proceeds from the sale of business, net of transaction costs	29,570
Proceeds from the sale of property, plant and equipment	127	112	253
Cash used in investing activities of continuing operations	(1,842)	(93,541)	(85,297)
Cash provided by investing activities of discontinued operations	209	3,768	12,341
Cash used in investing activities	(1,633)	(89,773)	(72,956)
Cash flows from financing activities:
Borrowings under revolving credit facility	13,000	77,000	60,000
Repayments of long-term debt and revolving credit facility	(30,500)	(33,500)	(38,500)
Payments for debt issuance costs		(712)	(145)
Payments of withholding taxes from stock-based awards	(1,941)	(1,666)	(1,495)
Repurchase of common stock	(1,627)		(526)
Other financing activities	(467)	(841)	(760)
Cash provided by (used in) financing activities of continuing operations	(21,535)	40,281	18,574
Cash provided by (used in) financing activities of discontinued operations	0	0	0
Cash provided by (used in ) financing activities	(21,535)	40,281	18,574
Effect of exchange rates on cash and cash equivalents	(1,435)	(2,631)	374
Increase (decrease) in cash and cash equivalents	8,813	(9,834)	(4,808)
Cash and cash equivalents, beginning of year	51,146	60,980	65,788
Cash and cash equivalents, end of year	59,959	51,146	60,980
Supplemental disclosure of cash flow information:
Cash paid for interest	3,784	3,793	2,291
Cash paid for income taxes	10,688	6,087	2,197
Income tax refunds received	3,939	931	12,607
Supplemental disclosure of non-cash investing activity:
Accrual for capital expenditures	1,180	26	184
Supplemental disclosure of non-cash financing activity:
Assets acquired under capital lease obligation	$ 0	$ 10,438	$ 0