Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 43,509	$ 297,006
Accounts receivable, net	167,201	140,283
Inventories	98,594	98,913
Other current assets	8,282	8,351
Total current assets	317,586	544,553
Property, plant, and equipment, net	95,856	95,830
Operating lease assets	31,823
Goodwill	323,573	323,671
Acquired intangibles	94,520	96,375
Other assets	2,900	1,216
Total assets	866,258	1,061,645
Current liabilities:
Accounts payable	84,462	79,136
Accrued expenses	65,020	87,074
Billings in excess of cost	18,259	17,857
Current maturities of long-term debt	400	208,805
Total current liabilities	168,141	392,872
Long-term debt	1,600	1,600
Deferred income taxes	36,916	36,530
Non-current operating lease liabilities	22,751
Other non-current liabilities	31,017	33,950
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; 33,026 shares and 32,887 shares issued and outstanding in 2019 and 2018	330	329
Additional paid-in capital	285,034	282,525
Retained earnings	346,922	338,995
Accumulated other comprehensive loss	(6,380)	(7,234)
Cost of 855 and 796 common shares held in treasury in 2019 and 2018	(20,073)	(17,922)
Total shareholders’ equity	605,833	596,693
Total liabilities and shareholders' equity	$ 866,258	$ 1,061,645