Warranty (Details) (USD $)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Loss Contingencies [Line Items]
Amount requested by LFR for damage					$ 135,000,000
Payments to LRF for the past three years					400,000,000
Activity related to the product warranty liability
Balance at beginning of period	3,752,000	4,071,000	3,686,000	4,832,000	4,832,000
Accrual for warranties during the period, net	942,000	674,000	2,787,000	1,462,000
Actual costs incurred	(946,000)	(942,000)	(2,725,000)	(2,491,000)
Balance at end of period	$ 3,748,000	$ 3,803,000	$ 3,748,000	$ 3,803,000	$ 3,686,000
Minimum [Member]
Product Warranties
Product Warranty Period			30 days
Maximum [Member]
Product Warranties
Product Warranty Period			3 years