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Supplemental Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Supplemental Cash Flow Information
Cash paid for income taxes, net	$ 97	$ 49
Supplemental non-cash financing activities:
Common stock repurchased for RSU tax withholdings	$ 2	$ 4

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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