Goodwill And Other Intangible Assets Schedule of other intangible assets and related accumulated amortization (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Mar. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (2,559)	$ (2,343)
Total net intangible assets	12,294	12,396
Global Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Indefinite-Lived Intangible Assets (Excluding Goodwill)	7,400	7,400
Local Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	7,012	6,979
Accumulated amortization	(2,429)	(2,217)
Finite-lived intangible assets, net	4,583	4,762
Local Relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	7 years
Local Relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	10 years
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	50	50
Accumulated amortization	(50)	(50)
Finite-lived intangible assets, net	0	0
Trade Names [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	1 year
Trade Names [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization Period	3 years
Existing Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	66	66
Accumulated amortization	(66)	(66)
Finite-lived intangible assets, net	0	0
Amortization Period	6 months
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	325	244
Accumulated amortization	(14)	(10)
Finite-lived intangible assets, net	$ 311	$ 234
Amortization Period	20 years