CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Cash provided (required) by operating activities:
Net income (loss)	$ 94,495	$ 112,664	$ (10,900)
Adjustments to reconcile net income (loss) to net cash provided (required) by operating activities:
Depreciation	72,569	59,161	56,125
Amortization	51,892	53,701	55,987
Stock-based compensation	5,375	2,236	2,293
Gain on sale of fixed assets and business, net	(1,173)	(934)	(366)
Impairment of fixed assets	990	3,581	0
Deferred income taxes	1,914	(73,268)	(19,994)
Employee benefit plan expense	3,340	1,064	1,128
Other	5,563	(5,188)	(858)
Changes in operating assets and liabilities (net of effects of acquisitions and foreign exchange):
Receivables	(53,890)	(61,573)	26,898
Inventories	(38,708)	(14,015)	32,912
Prepaid expenses and other current assets	(5,422)	(5,116)	3,156
Accounts payable	35,185	29,802	(9,874)
Accrued compensation and employee benefits	8,454	5,616	(2,122)
Accrued expenses and other current liabilities	14,004	(311)	(1,387)
Leased assets and other	(30,688)	(31,370)	(7)
Net cash provided by operating activities	163,900	76,050	132,991
Cash provided (required) by investing activities:
Capital expenditures	(57,918)	(36,654)	(26,099)
Proceeds from sale of fixed assets	1,187	3,547	2,526
Proceeds from sale of business	2,473	0	0
Acquisition (net of cash and cash equivalents acquired)	0	(8,842)	0
Addition to intangible assets	0	0	(3,700)
Purchase price adjustments on acquisition	53	0	0
Net cash required by investing activities	(54,205)	(41,949)	(27,273)
Cash provided (required) by financing activities:
Proceeds from long-term debt, net of discounts	713,963	0	0
Payment of debt issue costs	(16,006)	0	0
Repayment of long-term debt	(45,000)	(599)	0
Distributions to Dover Corporation, net	(736,557)	(31,192)	(84,254)
Distribution to noncontrolling interest	(2,720)	(1,212)	(1,727)
Payment of capital lease obligations	(4,518)	(3,690)	(4,037)
Net cash required by financing activities	(90,838)	(36,693)	(90,018)
Effect of exchange rate changes on cash and cash equivalents	(737)	277	(90)
Net increase (decrease) in cash and cash equivalents	18,120	(2,315)	15,610
Cash and cash equivalents at beginning of period	23,712	26,027	10,417
Cash and cash equivalents at end of period	$ 41,832	$ 23,712	$ 26,027