Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 2,532	$ 9,544
Accounts receivable, net	80,396	36,391
Inventories	16,955	23,747
Prepaid expenses and other current assets	4,879	6,288
Deferred income taxes	9,860	9,271
Total current assets	114,622	85,241
Property, plant and equipment, net	105,944	98,716
Goodwill and other intangibles	10,528	10,534
Other assets	1,537	1,333
Total assets	232,631	195,824
Current liabilities:
Accounts payable	10,146	20,050
Accrued expenses	22,548	20,660
Accrued warranty	7,744	8,744
Line of credit	48,500
Total current liabilities	88,938	49,454
Deferred income taxes	3,708	3,708
Non-current accrued warranty	28,211	25,097
Other long-term liabilities	3,774	4,180
Total liabilities	$ 124,631	$ 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; 34,779,891 and 34,800,552 shares issued and 30,865,162 and 32,020,123 shares outstanding at September 30, 2015 and December 31, 2014, respectively	$ 348	$ 348
Additional paid-in capital	116,571	116,740
Retained earnings	111,309	71,297
Treasury stock, at cost, 3,914,729 and 2,780,429 shares at September 30, 2015 and December 31, 2014, respectively	(120,228)	(75,000)
Total stockholders' equity	108,000	113,385
Total liabilities and stockholders' equity	$ 232,631	$ 195,824