Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities
Net income	$ 3,337	$ 9,949
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation, amortization and accretion	3,732	3,323
Impairment of long-lived assets	7,275	0
Amortization of debt related costs	169	320
Provision for bad debt	202	(190)
Provision for excess and obsolete inventory	449	511
Stock-based compensation	3,075	2,720
Deferred taxes	1,467	1,741
Long-term income tax receivable	(554)	(802)
Long-term income tax payable and other long-term liabilities	705	1,018
Other	452	(6)
Increases (decreases) in cash from operating assets and liabilities:
Accounts receivable	(1,750)	(1,040)
Inventory	(2,098)	465
Other current assets	1,149	(1,152)
Accounts payable	(913)	1,458
Accrued expenses and other liabilities	(7,289)	(7,847)
Net cash provided by operating activities	9,408	10,468
Investing activities
Capital expenditures	(2,698)	(10,550)
Net cash used in investing activities	(2,698)	(10,550)
Financing activities
Payments on long-term debt and other borrowings	(2,551)	(717)
Proceeds from stock option exercises	0	324
Proceeds from issuance of common stock	366	282
Payments for minimum statutory tax withholding related to net share settlement of equity awards	(1,547)	(1,120)
Net cash used in financing activities	(3,732)	(1,231)
Effect of foreign exchange rates on cash and cash equivalents	(184)	(27)
Net increase (decrease) in cash and cash equivalents	2,794	(1,340)
Cash and cash equivalents, beginning of period	92,919	113,401
Cash and cash equivalents, end of period	$ 95,713	$ 112,061