Lease Obligations - Schedule of future minimum lease payments (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Capital Leases
Capital Leases, 2015	$ 371
Capital Leases, 2016	353
Capital Leases, 2017	378
Capital Leases, 2018	390
Capital Leases, 2019	390
Capital Leases, Thereafter	909
Total minimum lease payments	2,791
Less amount representing interest	(572)
Present value of net minimum lease payments	2,219
Operating Leases
Operating Leases, 2015	775
Operating Leases, 2016	526
Operating Leases, 2017	80
Operating Leases, 2018	9
Operating Leases, 2019	0
Operating Leases, Thereafter	0
Total minimum lease payments	$ 1,390