Capital Stock, Authorized Capital Stock (Details)
|
12 Months Ended |
|
|
Dec. 31, 2019
Vote
$ / shares
shares
|
Dec. 31, 2018
$ / shares
shares
|
| Capital Stock [Abstract] |
|
|
| Preferred stock, authorized (in shares) |
25,000,000
|
|
| Preferred stock, par value (in dollars per share) | $ / shares |
$ 0.001
|
|
| Common stock, shares authorized (in shares) |
500,000,000
|
500,000,000
|
| Common stock, par value (in dollars per share) | $ / shares |
$ 0.001
|
$ 0.001
|
| Preferred stock, shares outstanding (in shares) |
0
|
0
|
| Common Class A [Member] |
|
|
| Capital Stock [Abstract] |
|
|
| Common stock, shares authorized (in shares) |
500,000,000
|
|
| Common stock, par value (in dollars per share) | $ / shares |
$ 0.001
|
|
| Number of votes per share | Vote |
1
|
|
| Number of shares of class A common stock issued after conversion of Class B common stock (in shares) |
1
|
|
| Common Class B [Member] |
|
|
| Capital Stock [Abstract] |
|
|
| Common stock, shares authorized (in shares) |
100,000,000
|
|
| Common stock, par value (in dollars per share) | $ / shares |
$ 0.001
|
|
| Common stock, shares outstanding (in shares) |
0
|
0
|
| Number of votes per share | Vote |
10
|
|