XML 22 R22.htm IDEA: XBRL DOCUMENT
v3.20.1

Note 14 - Fair Value of Financial Instruments | 12 Months Ended
--- | ---
Dec. 31, 2019
Notes to Financial Statements |
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] |
( 14 ) | Fair Value of Financial Instruments
Cash, accounts receivable, accounts payable and accrued liabilities are reflected in the consolidated financial statements at their carrying amount which approximates fair value because of the short-term maturity of those instruments. The carrying amount of debt outstanding at December 31, 2019 approximates fair value, and is based upon a market approach (Level 2 ).

X
- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure of the fair value measurement of assets and liabilities, which includes financial instruments measured at fair value that are classified in shareholders' equity, which may be measured on a recurring or nonrecurring basis. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -URI http://asc.fasb.org/topic&trid=2155941 + Details
Name: | us-gaap_FairValueMeasurementInputsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration