CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash	$ 1,488	$ 47
Trade accounts receivable, net of allowance for doubtful accounts of $8,837 in 2015 and $8,713 in 2014	194,346	239,236
Inventories, net	109,724	115,658
Costs and estimated profits in excess of billings on uncompleted contracts	25,930	20,083
Prepaid expenses and other current assets	4,737	3,004
Deferred income taxes	8,301	8,250
Total current assets	344,526	386,278
Property and equipment, net	69,385	69,979
Goodwill	256,213	253,312
Other intangible assets, net of accumulated amortization of $76,632 in 2015 and $66,412 in 2014	120,301	130,333
Other long-term assets	3,191	1,730
Total assets	793,616	841,632
Current liabilities:
Current maturities of long-term debt	44,568	38,608
Trade accounts payable	84,199	100,774
Accrued wages and benefits	22,194	26,967
Federal income taxes payable	7,433	8,130
Customer advances	3,773	4,262
Billings in excess of costs and profits on uncompleted contracts	8,106	8,840
Other current liabilities	24,944	19,621
Total current liabilities	195,217	207,202
Long-term debt, less current maturities	334,940	372,908
Less unamortized debt issuance costs	(2,135)	(2,714)
Long-term debt less unamortized debt issuance costs	332,805	370,194
Non-current deferred income taxes	$ 18,400	$ 21,284
Commitments and Contingencies (Note 14)
Shareholders' equity:
Common stock, $0.01 par value, 100,000,000 shares authorized; 14,655,356 in 2015 and 14,655,356 in 2014 shares issued	$ 146	$ 146
Additional paid-in capital	114,530	115,605
Retained earnings	165,182	148,409
Accumulated other comprehensive loss	(10,471)	(5,700)
Treasury stock, at cost (420,921 shares in 2015 and 280,195 in 2014)	(22,209)	(15,524)
Total shareholders' equity	247,194	242,952
Total liabilities and stockholders' equity	793,616	841,632
Series A Preferred Stock [Member]
Shareholders' equity:
Preferred stock	1	1
Series B Convertible Preferred Stock [Member]
Shareholders' equity:
Preferred stock	$ 15	$ 15