Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 3,729	$ 3,772
Accounts receivable, net	116,470	37,338
Inventories	30,213	22,428
Prepaid expenses and other assets	2,969	3,145
Deferred income taxes	9,145	9,497
Total current assets	162,526	76,180
Property, plant, and equipment, net	100,278	100,783
Goodwill and other intangibles	10,539	10,542
Other assets	652	652
Total assets	273,995	188,157
Current liabilities:
Accounts payable	10,999	14,891
Accrued expenses	16,478	23,295
Accrued warranty	9,000	9,000
Line of credit	80,000
Total current liabilities	116,477	47,186
Deferred income taxes	360	360
Non-current accrued warranty	29,802	31,812
Other long-term liabilities	2,134	2,183
Total liabilities	148,773	81,541
Stockholders' equity:
Preferred stock, $0.01 par value, 3,000,000 shares authorized; none issued and outstanding
Common stock, $0.01 par value, 40,000,000 shares authorized; 17,339,036 and 17,299,062 shares issued and 16,777,781 and 16,737,807 shares outstanding at March 31, 2014 and December 31, 2013, respectively	173	173
Additional paid-in capital	107,978	101,667
Retained earnings	42,071	29,776
Treasury stock, at cost, 561,255 shares	(25,000)	(25,000)
Total stockholders' equity	125,222	106,616
Total liabilities and stockholders' equity	$ 273,995	$ 188,157