Goodwill and intangible assets (Tables)

6 Months Ended

Jun. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets [Table Text Block]

The estimated useful lives and carrying value of acquired intangible assets are as follows:

		June 30, 2012						December 31, 2011
	Weighted  Average Useful Life	Gross  Carrying  Amount		Accumulated Amortization		Net  Carrying  Amount		Gross  Carrying  Amount		Accumulated Amortization		Net  Carrying  Amount
	(years)
Intangible assets:
Trademarks	6.9	$	70	$	23	$	47	$	70	$	16	$	54
Non-Compete Agreements	2.0	70		35		35		70		13		57
Customer Relationships	8.6	2,350		904		1,446		2,350		690		1,660
Developed Technology	6.0	1,880		703		1,177		1,880		510		1,370
		$	4,370	$	1,665	$	2,705	$	4,370	$	1,229	$	3,141