Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Cash and cash equivalents	$ 18,664	$ 5,995
Accounts receivable, net	48,039	47,386
Inventories	28,546	23,104
Prepaid expenses and other assets	10,400	13,409
Deferred income taxes		9,136
Total current assets	105,649	99,030
Property, plant and equipment, net	103,286	100,924
Goodwill and other intangibles	10,523	10,526
Other assets	1,972	1,518
Total Assets	221,430	211,998
Current Liabilities:
Accounts payable	10,767	17,733
Accrued expenses	34,693	28,891
Accrued warranty	5,925	6,825
Line of Credit		7,000
Total current liabilities	51,385	60,449
Deferred income taxes	894	4,597
Non-current accrued warranty	31,767	26,698
Other long-term liabilities	3,223	3,791
Total Liabilities	87,269	95,535
Commitments and contingencies
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; 34,894,233 and 34,819,259 shares issued and 29,400,552 and 30,904,530 shares outstanding at December 31, 2016 and 2015, respectively	349	348
Additional paid-in capital	120,082	116,947
Retained earnings	187,242	119,395
Treasury stock, at cost, 5,493,681 and 3,914,729 shares at December 31, 2016 and 2015, respectively	(173,512)	(120,227)
Total Stockholders' Equity	134,161	116,463
Total Liabilities and Stockholders' Equity	$ 221,430	$ 211,998