Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 5,572	$ 3,772
Accounts receivable, net	60,093	37,338
Inventories	21,055	22,428
Prepaid expenses and other assets	5,871	3,145
Deferred income taxes	9,497	9,497
Total current assets	102,088	76,180
Property, plant and equipment, net	98,257	100,783
Goodwill and other intangibles	10,538	10,542
Other assets	897	652
Total assets	211,780	188,157
Current liabilities:
Accounts payable	19,474	14,891
Accrued expenses	20,169	23,295
Accrued warranty	9,000	9,000
Line of credit	35,000
Total current liabilities	83,643	47,186
Deferred income taxes	360	360
Non-current accrued warranty	28,891	31,812
Other long-term liabilities	2,148	2,183
Total liabilities	115,042	81,541
Stockholders' equity:
Preferred stock, $0.01 par value, 3,000,000 shares authorized; none issued and outstanding	0	0
Common stock, $0.01 par value, 80,000,000 shares authorized; 34,757,157 and 34,598,124 shares issued and 31,976,728 and 33,475,614 shares outstanding at June 30, 2014 and December 31, 2013, respectively	348	173
Additional paid-in capital	114,158	101,667
Retained earnings	57,232	29,776
Treasury stock, at cost, 2,780,429 and 1,122,510 shares at June 30, 2014 and December 31, 2013, respectively	(75,000)	(25,000)
Total stockholders' equity	96,738	106,616
Total liabilities and stockholders' equity	$ 211,780	$ 188,157