Subsequent Events (Details) (Subsequent Event [Member], USD $)	0 Months Ended
	Apr. 01, 2015 installment	Apr. 01, 2015
Mid Pac Credit Agreement [Member] | Revolving Credit Facility [Member]
Subsequent Event [Line Items]
Line credit maximum borrowing amount	$ 5,000,000	$ 5,000,000
Mid Pac Credit Agreement [Member] | Secured Debt [Member]
Subsequent Event [Line Items]
Line credit maximum borrowing amount	50,000,000	50,000,000
Debt instrument, number of periodic payment Installments	28
Mid Pac Petroleum, LLC [Member]
Subsequent Event [Line Items]
Cash consideration transferred prior to certain post-closing adjustments	$ 107,000,000