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Summary of Significant Accounting Policies:Interest Rate Risk and Interest Rate Swaps (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Interest Rate Derivatives [Line Items]
Long-term debt	$ 440,178	$ 440,544
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Level 2 [Member] | Other Noncurrent Liabilities [Member]
Interest Rate Derivatives [Line Items]
Fair value of interest swap agreements, Liability	2,000
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Level 2 [Member] | Other assets [Member]
Interest Rate Derivatives [Line Items]
Fair value of interest rate swap agreements, Asset		800
Interest rate swap – $50 million and $45 million notional amount fixed at 1.007% and 1.256% [Member] | Not Designated as Hedging Instrument [Member]
Interest Rate Derivatives [Line Items]
Interest rate swaps, notional amount	95,000	$ 95,000
Interest Rate Swap - $50 million notional amount fixed at 1.007% [Member] | Not Designated as Hedging Instrument [Member]
Interest Rate Derivatives [Line Items]
Interest rate swaps, notional amount	$ 50,000
Interest rate swaps, fixed interest rate	1.007%
Interest Rate Swap - $45 million notional amount fixed at 1.256% [Member] | Not Designated as Hedging Instrument [Member]
Interest Rate Derivatives [Line Items]
Interest rate swaps, notional amount	$ 45,000
Interest rate swaps, fixed interest rate	1.256%
Interest Rate Swap - $50 million notional amount fixed at 0.39% [Member] | Not Designated as Hedging Instrument [Member]
Interest Rate Derivatives [Line Items]
Interest rate swaps, notional amount	$ 50,000
Interest rate swaps, forward interest rate	0.39%
Interest Rate Swap - $45 million notional amount fixed at 0.431% [Member] | Not Designated as Hedging Instrument [Member]
Interest Rate Derivatives [Line Items]
Interest rate swaps, notional amount	$ 45,000
Interest rate swaps, forward interest rate	0.431%
Term Loans Due 2024 and 2026 [Member]
Interest Rate Derivatives [Line Items]
Long-term debt	$ 95,000

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
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