Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 4,149	$ 9,544
Accounts receivable, net	124,465	36,391
Inventories	18,626	23,747
Prepaid expenses and other current assets	2,045	6,288
Deferred income taxes	9,860	9,271
Total current assets	159,145	85,241
Property, plant and equipment, net	105,530	98,716
Goodwill and other intangibles	10,530	10,534
Other assets	1,559	1,333
Total assets	276,764	195,824
Current liabilities:
Accounts payable	19,946	20,050
Accrued expenses	28,464	20,660
Accrued warranty	8,186	8,744
Line of credit	37,500
Total current liabilities	94,096	49,454
Deferred income taxes	3,708	3,708
Non-current accrued warranty	23,185	25,097
Other long-term liabilities	4,285	4,180
Total liabilities	$ 125,274	$ 82,439
Stockholders' equity:
Preferred stock, $0.01 par value, 3,000,000 shares authorized; none issued and outstanding
Common stock, $0.01 par value, 80,000,000 shares authorized; 34,832,045 and 34,800,552 shares issued and 32,051,616 and 32,020,123 shares outstanding at June 30, 2015 and December 31, 2014, respectively	$ 348	$ 348
Additional paid-in capital	118,577	116,740
Retained earnings	107,565	71,297
Treasury stock, at cost, 2,780,429 shares at June 30, 2015 and December 31, 2014	(75,000)	(75,000)
Total stockholders' equity	151,490	113,385
Total liabilities and stockholders' equity	$ 276,764	$ 195,824