Fair Value Measurements (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Financial liability recorded at fair value on a recurring basis [Abstract]
Interest rate swap	$ (453)	$ (503)
Fixed-rate debt on balance sheet
Fixed-rate debt outstanding [abstract]
Fixed-rate debt	1,335	1,456
Estimated fair value of fixed-rate debt
Fixed-rate debt outstanding [abstract]
Fixed-rate debt	1,381	1,513
Recurring
Financial liability recorded at fair value on a recurring basis [Abstract]
Interest rate swap	(453)	(503)
Recurring | Level 1
Financial liability recorded at fair value on a recurring basis [Abstract]
Interest rate swap	0	0
Recurring | Level 2
Financial liability recorded at fair value on a recurring basis [Abstract]
Interest rate swap	(453)	(503)
Recurring | Level 3
Financial liability recorded at fair value on a recurring basis [Abstract]
Interest rate swap	$ 0	$ 0