Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Assets
Cash and cash equivalents	$ 113,532	$ 145,506
Restricted cash and restricted certificates of deposit	6,015	7,780
Marketable securities	47,961	38,988
Accounts receivable, net of allowance for doubtful accounts of $188 and $221, respectively	4,086	4,034
Inventories, net	82,259	66,340
Inventory on lease	116	16,955
Other current assets	7,057	6,768
Deferred income taxes, net	12,139	11,017
Total current assets	273,165	297,388
Property, plant and equipment, net	43,239	39,396
Railcars available for lease, net	22,897	36,110
Goodwill	22,128	22,128
Deferred income taxes, net	21,553	19,758
Other long-term assets	2,270	2,939
Total assets	385,252	417,719
Liabilities and Stockholders' Equity
Accounts and contractual payables	34,010	16,016
Accrued payroll and employee benefits	6,462	3,981
Accrued postretirement benefits	409	413
Accrued warranty	8,742	6,957
Customer deposits	43,977	91,771
Customer advance	0	19,037
Other current liabilities	4,725	9,053
Total current liabilities	98,325	147,228
Accrued pension costs	7,210	845
Accrued postretirement benefits, less current portion	73,474	62,899
Accrued taxes and other long-term liabilities	7,548	4,212
Total liabilities	186,557	215,184
Stockholders' equity
Preferred stock, $0.01 par value, 2,500,000 shares authorized (100,000 shares each designated as Series A voting and Series B non-voting, 0 shares issued and outstanding at December 31, 2014 and December 31, 2013)	0	0
Common stock, $0.01 par value, 50,000,000 shares authorized, 12,731,678 shares issued at December 31, 2014 and December 31, 2013	127	127
Additional paid in capital	100,303	99,265
Treasury stock, at cost, 665,869 and 682,264 shares at December 31, 2014 and December 31, 2013, respectively	(29,971)	(30,970)
Accumulated other comprehensive loss	(24,017)	(15,132)
Retained earnings	152,253	149,245
Total stockholders' equity	198,695	202,535
Total liabilities and stockholders' equity	$ 385,252	$ 417,719