Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block] |
| | Three Months Ended September 30, 2018 | | | | | | | | | | | | | | | | | | | | | | | | | Net revenues: | | | | | | | | | | | | | Net rental revenues | | $ | 13,773 | | | $ | 1,467 | | | $ | 15,240 | | Net revenues | | | 16,677 | | | | 1,467 | | | | 18,144 | | | | | | | | | | | | | | | Gross profit | | | 9,548 | | | | 1,467 | | | | 11,015 | | | | | | | | | | | | | | | Selling, general and administrative expenses: | | | | | | | | | | | | | Provision for doubtful accounts | | | - | | | | 1,467 | | | | 1,467 | | Total selling, general and administrative | | | 9,643 | | | | 1,467 | | | | 11,110 | |
| | Nine Months Ended September 30, 2018 | | | | | | | | | | | | | | | | | | | | | | | | | Net revenues: | | | | | | | | | | | | | Net rental revenues | | $ | 42,246 | | | $ | 4,804 | | | $ | 47,050 | | Net revenues | | | 49,575 | | | | 4,804 | | | | 54,379 | | | | | | | | | | | | | | | Gross profit | | | 29,174 | | | | 4,804 | | | | 33,978 | | | | | | | | | | | | | | | Selling, general and administrative expenses: | | | | | | | | | | | | | Provision for doubtful accounts | | | - | | | | 4,804 | | | | 4,804 | | Total selling, general and administrative | | | 28,885 | | | | 4,804 | | | | 33,689 | |
|