Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 245,413	$ 222,280
Accounts receivable, net	180,875	145,385
Inventories	97,486	86,372
Other current assets	8,949	8,727
Total current assets	532,723	462,764
Property, plant, and equipment, net	93,718	97,098
Goodwill	323,321	321,074
Acquired intangibles	99,545	105,768
Other assets	4,480	4,681
Total assets	1,053,787	991,385
Current liabilities:
Accounts payable	92,997	82,387
Accrued expenses	76,268	75,467
Billings in excess of cost	21,900	12,779
Current maturities of long-term debt	400	400
Total current liabilities	191,565	171,033
Long-term debt	209,809	209,621
Deferred income taxes	32,110	31,237
Other non-current liabilities	37,428	47,775
Shareholders’ equity:
Preferred stock, $0.01 par value; authorized 10,000 shares; none outstanding	0	0
Common stock, $0.01 par value; authorized 50,000 shares; 32,842 shares and 32,332 shares issued and outstanding in 2018 and 2017	328	323
Additional paid-in capital	280,149	271,957
Retained earnings	325,878	274,562
Accumulated other comprehensive loss	(6,174)	(4,366)
Cost of 778 and 615 common shares held in treasury in 2018 and 2017	(17,306)	(10,757)
Total shareholders’ equity	582,875	531,719
Total liabilities and shareholders' equity	$ 1,053,787	$ 991,385