Employee Benefits (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014 employee	Dec. 31, 2013
Employee Benefits [Abstract]
Employer matching contribution, percent of employees' pay	100.00%
Maximum annual contribution per employee, percent	4.00%
Participants in employee health plan	3,063
Health care cap per person	$ 110,000
Insured capped maximum exposure health care	15,000,000
Defined contribution plan, cost recognized	815,000	700,000
Health benefits expense	8,100,000	4,100,000
Amortized Deferred Bonus Plan	406,000	467,000
Production bonus plan expense	373,000	582,000
Workers' compensation liability	2,800,000	1,300,000
Insured maximum exposure per employee	1,000,000
Aggragate insurance deductable for employees	$ 4,000,000