Summary of Significant Accounting Policies:Interest Rate Risk and Interest Rate Swaps (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Interest Rate Derivatives [Line Items]
Long-term debt	$ 439,915	$ 440,544
Interest Rate Swap [Member] \| Not Designated as Hedging Instrument [Member] \| Level 2 [Member] \| Other Noncurrent Liabilities [Member]
Interest Rate Derivatives [Line Items]
Interest Rate Derivative Instruments Not Designated as Hedging Instruments, Liability at Fair Value	1,500
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 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 – $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 - $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%
Term Loans Due 2022 and 2026 [Member]
Interest Rate Derivatives [Line Items]
Long-term debt	$ 95,000

Fixed interest rate related to the interest rate derivative.

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- Definition

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+ References

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- Definition

Nominal or face amount used to calculate payment on derivative.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
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-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959

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Fair value as of the balance sheet date of all derivative assets not designated as hedging instruments.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
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Fair value as of the balance sheet date of all derivative liabilities not designated as hedging instruments.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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