Warranty Reserve (Schedule of Changes in Warranty Accrual) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Warranty Reserve [Abstract]
Accrued warranty reserve, beginning of period	$ 2,432	$ 1,546	$ 2,194	$ 1,150
Warranty reserves assumed in business combinations		200		341
Warranty expense provisions	668	715	2,097	1,354
Payments	(318)	(347)	(913)	(731)
Warranty adjustment	(112)		(708)
Accrued warranty reserve, end of period	$ 2,670	$ 2,114	$ 2,670	$ 2,114