Consolidated Condensed Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 19,376	$ 1,594
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	9,006	9,758
Amortization	21,492	18,442
Stock-based compensation	4,953	4,221
Deferred income taxes	118	(4,275)
Increase in cash flows from changes in assets and liabilities:
Accounts receivable	3,506	6,298
Inventories	(3,014)	572
Accounts payable	9,981	4,393
Accrued compensation and benefits	(2,371)	(7,233)
Other assets	(16,306)	(15,005)
Other liabilities	(1,094)	12,561
Total operating	26,271	29,732
Net cash provided by operating activities	45,647	31,326
Cash flows from investing activities:
Purchases of property, plant and equipment	(7,291)	(5,525)
Payments to Acquire Businesses Net of Cash Acquired and Asset Acquisitions	0	(1,765)
Net cash used in investing activities	(7,291)	(7,290)
Cash flows from financing activities:
Payments on term loan	(6,563)	(4,375)
Payments on revolving line of credit	(87,000)	(68,000)
Proceeds from revolving line of credit	57,000	71,000
Dividends paid on common stock	(11,198)	(11,138)
Other, net	684	(1,218)
Net cash used in financing activities	(47,077)	(13,731)
Effect of exchange rate changes on cash and cash equivalents	(500)	2,408
Net increase (decrease) in cash and cash equivalents	(9,221)	12,713
Cash and cash equivalents at beginning of period	32,622	27,428
Cash and cash equivalents at end of period	23,401	40,141
Non-cash investing and financing activities:
Contractual obligations from asset acquisition	25,849	0
Dividends payable	$ 5,620	$ 5,584