Business Segment Information (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets
Property and Equipment Additions	$ 273	$ 913
Depreciation and Amortization	1,250	1,399
Identifiable Assets	94,104	79,345
Engineered Equipment Technology and Parts Group [Member]
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets
Property and Equipment Additions	113	183
Depreciation and Amortization	623	766
Identifiable Assets	60,516	51,480
Contracting / Services Group [Member]
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets
Property and Equipment Additions	61	115
Depreciation and Amortization	221	232
Identifiable Assets	25,636	18,588
Component Parts Group [Member]
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets
Property and Equipment Additions	77	449
Depreciation and Amortization	193	185
Identifiable Assets	5,573	5,577
Corporate and other [Member]
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets
Property and Equipment Additions	22	166
Depreciation and Amortization	213	216
Identifiable Assets	7,599	9,705
Eliminations [Member]
Property and Equipment Additions, Depreciation and Amortization and Identifiable Assets
Identifiable Assets	$ (5,220)	$ (6,005)