CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands |
Mar. 31, 2020 |
Dec. 31, 2019 |
| Allowance for doubtful accounts receivable (in dollars) |
$ 7,159
|
$ 7,416
|
| Convertible Preferred stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Convertible Preferred stock, shares authorized |
1,000,000
|
1,000,000
|
| Convertible Preferred stock, shares outstanding |
0
|
0
|
| Common Stock Class A [Member] |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares authorized |
30,000,000
|
30,000,000
|
| Common stock, shares issued |
1,582,359
|
1,582,375
|
| Common stock, shares outstanding |
1,582,359
|
1,582,375
|
| Common Stock Class B [Member] |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares authorized |
150,000,000
|
150,000,000
|
| Common stock, shares issued |
2,861,843
|
2,861,843
|
| Common stock, shares outstanding |
2,861,843
|
2,861,843
|
| Common Stock Class C [Member] |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares authorized |
150,000,000
|
150,000,000
|
| Common stock, shares issued |
2,928,906
|
2,928,906
|
| Common stock, shares outstanding |
2,928,906
|
2,928,906
|
| Class D common stock |
|
|
| Common stock, par value (in dollars per share) |
$ 0.001
|
$ 0.001
|
| Common stock, shares authorized |
150,000,000
|
150,000,000
|
| Common stock, shares issued |
38,204,964
|
38,752,749
|
| Common stock, shares outstanding |
38,204,964
|
38,752,749
|