Schedule of assets allocated and non allocated to segments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012
Total assets	$ 58,060	$ 61,310	$ 56,020
Unallocated Amount to Segment [Member]
Total assets	32,934		35,548
Asset Liquidation Segment [Member]
Total assets	25,126		20,472
Reportable Segments [Member]
Total assets	$ 25,126		$ 20,472