Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Current assets
Cash and cash equivalents	$ 17,851	$ 26,049	$ 37,961
Accounts receivable, net of allowances of $2,991, $2,226, and $1,536 at June 30, 2018, June 30, 2017, and December 31, 2017, respectively	163,249	82,157	130,514
Inventories, net	323,893	274,748	202,635
Prepaid expenses and other current assets	43,961	34,125	43,977
Total current assets	548,954	417,079	415,087
Fixed assets, net	282,142	228,950	203,204
Goodwill	151,831	124,183	122,275
Other intangible assets, net	181,426	130,132	138,876
Deferred taxes	17,947	24,156	31,864
Other assets	22,513	21,358	13,344
Total assets	1,204,813	945,858	924,650
Current liabilities
Accounts payable, trade	99,085	79,164	80,596
Accrued expenses and other current liabilities	104,281	102,849	114,454
Total current liabilities	203,366	182,013	195,050
Long-term indebtedness	215,327	49,924	49,911
Other long-term liabilities	72,941	61,176	59,934
Total liabilities	491,634	293,113	304,895
Stockholders’ equity
Common stock, par value $.01 per share	279	277	276
Paid-in capital	200,306	203,990	195,452
Retained earnings	540,411	475,506	452,877
Accumulated other comprehensive income	1,650	2,439	617
Stockholders’ equity before treasury stock	742,646	682,212	649,222
Treasury stock, at cost	(29,467)	(29,467)	(29,467)
Total stockholders’ equity	713,179	652,745	619,755
Total liabilities and stockholders’ equity	$ 1,204,813	$ 945,858	$ 924,650