Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 222,280	$ 170,177
Accounts receivable, net	145,385	124,072
Inventories	86,372	89,612
Other current assets	8,727	7,336
Total current assets	462,764	391,197
Property, plant, and equipment, net	97,098	108,304
Goodwill	321,074	304,032
Acquired intangibles	105,768	110,790
Other assets	4,681	3,922
Total assets	991,385	918,245
Current liabilities:
Accounts payable	82,387	69,944
Accrued expenses	75,467	70,392
Billings in Excess of Cost	12,779	11,352
Current maturities of long-term debt	400	400
Total current liabilities	171,033	152,088
Long-term debt	209,621	209,237
Deferred income taxes	31,237	38,002
Other non-current liabilities	47,775	58,038
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; 32,332 and 32,085 shares outstanding in 2017 and 2016	323	320
Additional paid-in capital	271,957	264,418
Retained earnings	274,562	211,748
Accumulated other comprehensive loss	(4,366)	(7,721)
Cost of 615 and 530 common shares held in treasury in 2017 and 2016	(10,757)	(7,885)
Total shareholders’ equity	531,719	460,880
Total liabilities and shareholders' equity	$ 991,385	$ 918,245