Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financial liability recorded at fair value on a recurring basis [Abstract]
Derivative financial instrument	$ 127	$ 219
Carrying Value (Balance Sheet) [Member]
Fixed-rate debt outstanding [abstract]
Fixed-rate debt	1,187	1,260
Fair Value [Member]
Fixed-rate debt outstanding [abstract]
Fixed-rate debt	1,242	1,275
Recurring [Member]
Financial liability recorded at fair value on a recurring basis [Abstract]
Derivative financial instrument	127	219
Recurring [Member] | Level 1 [Member]
Financial liability recorded at fair value on a recurring basis [Abstract]
Derivative financial instrument	0	0
Recurring [Member] | Level 2 [Member]
Financial liability recorded at fair value on a recurring basis [Abstract]
Derivative financial instrument	127	219
Recurring [Member] | Level 3 [Member]
Financial liability recorded at fair value on a recurring basis [Abstract]
Derivative financial instrument	$ 0	$ 0