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Fair Value Measurement: Schedule of Fair Value of Interest Rate Swap Liability (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2012 | Jun. 30, 2011
Interest Rate Swap Liability Change in Fair Value Through Earnings | $ 827 | $ 1,109 |
Interest Rate Swap Liability Balance June 30 | $ 1,230 | $ 1,230 | $ 0

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Namespace Prefix: | fil_
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