Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities
Net income	$ 6,151	$ 1,199
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization	8,923	10,447
Amortization of debt costs and other assets	592	719
Provision for doubtful accounts	(360)	820
Deferred income taxes	724	4,284
Share-based compensation	9,131	5,492
Other-than-temporary impairment on debt securities		5,585
Gain on valuation of equity securities	(1,399)
Revaluation of contingent consideration	1,109
Other	847	572
Changes in operating assets and liabilities, net of effects of acquisition
Accounts receivable	(363)	(3,787)
Inventories	5,251	(11,119)
Prepaid expenses and other current assets	71	2,199
Accounts payable	(3,847)	(950)
Other current liabilities	(14,612)	(19,407)
Other long-term assets and liabilities	814	(696)
Net cash from operating activities	13,032	(4,642)
Cash flows from investing activities
Acquisition of business, net of cash acquired	(43,749)
Capital expenditures for property, plant and equipment	(5,782)	(7,035)
Capital expenditures for intangible assets	(870)	(1,558)
Asset acquisition and other investments	(1,148)
Other investing activities		474
Net cash from investing activities	(51,549)	(8,119)
Cash flows from financing activities
Proceeds from issuance of common shares	5,416	5,282
Payments related to withholdings for share-based compensation	(1,375)	(2,851)
Payment of debt issuance costs and other financing activities	(356)
Net cash from financing activities	3,685	2,431
Effect of exchange rate changes on cash	(639)	719
Net change in cash, cash equivalents, and restricted cash	(35,471)	(9,611)
Cash, cash equivalents, and restricted cash at the beginning of the period	81,157	53,941
Cash, cash equivalents, and restricted cash at the end of the period	45,686	$ 44,330
Noncash investing activities:
Purchase of intangible assets	1,181
Contingent consideration recognized at acquisition date	$ 25,491