Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 3,367	$ 2,376
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,869	2,060
Provision for bad debts - accounts receivable	865	138
Share-based compensation expense	399	481
Deferred income tax benefit	(784)	(1,182)
Gain on sale of property, plant and equipment		(3)
Change in fair value of acquisition-related contingent liabilities	175	201
Changes in assets and liabilities:
Accounts receivable - trade	4,940	309
Accounts receivable - other	425	312
Contract assets	299	1,876
Inventories	(831)	1,522
Prepaid expenses and other current assets	2,327	(2,197)
Other assets	1,410	(1,503)
Accounts payable and other current liabilities	4,656	(12)
Long-term pension liability	294	262
Other long-term liabilities	134	1,099
Net cash provided by operating activities	19,545	5,739
CASH FLOWS FROM INVESTING ACTIVITIES
Additions to property, plant and equipment	(2,073)	(1,723)
Proceeds from disposals of property, plant and equipment		3
Net cash used in investing activities	(2,073)	(1,720)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from borrowings of debt	34,488	54,856
Repayment of debt	(52,672)	(55,161)
Payment of cash dividends	(1,521)	(1,515)
Proceeds received on exercise of stock options		210
Tax (provision) benefit from vesting of acquisition-related restricted stock	(13)	30
Common stock reacquired and retired	(500)	(992)
Net cash used in financing activities	(20,218)	(2,572)
Effect of currency exchange rates on cash	(519)	15
Net increase (decrease) in cash and cash equivalents	(3,265)	1,462
Cash and cash equivalents balance, beginning of period	9,038	5,362
Cash and cash equivalents balance, end of period	$ 5,773	$ 6,824