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Subsequent Event (Notes)
 6 Months Ended
Jun. 30, 2020
Subsequent Event [Abstract]  
Subsequent Events [Text Block] Subsequent Event
On July 30, 2020, the Company successfully executed a $150,000 revolving credit facility at LIBOR plus 2% with Mizuho Bank Ltd, a related party. The agreement has a one-year term with an one-year extension option.