Subsequent Events (Details) (USD $)			0 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jul. 21, 2014 Subsequent Event [Member] Welch A.T.M. [Member]	Jul. 28, 2014 Subsequent Event [Member] 8.25% Senior Subordinated Notes Due 2018 [Member]	Jul. 28, 2014 Subsequent Event [Member] 5.125% Senior Subordinated Notes Due 2022 [Member]
Subsequent Event [Line Items]
Business Combination, total consideration			$ 160,000,000
Debt Instrument, Face Amount					250,000,000
8.25% Senior subordinated notes due September 2018	179,442,000	200,000,000
Debt Instrument , Principal Tendered				$ 64,000,000
Notes stated interest percentage				8.25%	5.125%