Subsequent Events (Details)			1 Months Ended					12 Months Ended
	Feb. 18, 2020 USD ($) installment board_member shares	Jan. 24, 2020 USD ($)	Dec. 31, 2019 USD ($) shares	Nov. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Mar. 31, 2018 USD ($)	Jun. 30, 2017 USD ($)	Dec. 31, 2019 USD ($) shares	Feb. 17, 2020 board_member	Aug. 31, 2019 USD ($)	Feb. 28, 2019 USD ($)	Dec. 31, 2018 shares
Subsequent Event
Subsequent Event [Line Items]
Number of board members | board_member	7								6
Capital Lease Obligations
Subsequent Event [Line Items]
Capital lease, face amount | $			$ 1,000,000.0	$ 2,200,000	$ 1,300,000	$ 500,000	$ 5,000,000.0	$ 1,000,000.0		$ 1,300,000	$ 2,900,000
Interest rate, stated percentage			5.42%	5.69%	5.38%	5.38%	5.24%	5.42%		6.33%
Capital lease term			3 years	3 years	3 years	4 years	4 years
Capital Lease Obligations | Subsequent Event
Subsequent Event [Line Items]
Capital lease, face amount | $		$ 1,000,000.0
Interest rate, stated percentage		5.42%
Capital lease term		3 years
RSUs
Subsequent Event [Line Items]
Granted (in shares)								1,644,000
Restricted stock units, unvested (in shares)			1,641,000					1,641,000				0
Chief Architect And Executive Chairperson | Subsequent Event
Subsequent Event [Line Items]
Annual salary | $	$ 35,568
Chief Architect And Executive Chairperson | Annual RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting installments | installment	4
Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Granted (in shares)	170,009
Chief Executive Officer | Subsequent Event
Subsequent Event [Line Items]
Annual salary | $	$ 35,568
Chief Executive Officer | Annual RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting installments | installment	4
Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Granted (in shares)	235,425
First Award | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock units, unvested (in shares)	109,027
First Award | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock units, unvested (in shares)	174,443
First Award | Tranche 1 | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting percentage	12.50%
First Award | Tranche 1 | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting percentage	12.50%
First Award | Tranche 2 | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting installments | installment	14
Restricted stock, vesting percentage	6.25%
First Award | Tranche 2 | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting installments | installment	14
Restricted stock, vesting percentage	6.25%
Second Award | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting installments | installment	4
Restricted stock units, unvested (in shares)	43,959
Restricted stock, performance target	1
Second Award | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting installments | installment	4
Restricted stock units, unvested (in shares)	43,959
Restricted stock, performance target	1
Second Award | Maximum | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, performance target	2
Second Award | Maximum | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, performance target	2
Third Award | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock units, unvested (in shares)	17,023
Third Award | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock units, unvested (in shares)	17,023
Third Award | Tranche 1 | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting percentage	50.00%
Third Award | Tranche 1 | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting percentage	50.00%
Third Award | Tranche 2 | Chief Architect And Executive Chairperson | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting percentage	25.00%
Third Award | Tranche 2 | Chief Executive Officer | RSUs | Subsequent Event
Subsequent Event [Line Items]
Restricted stock, vesting percentage	25.00%
Forecast | Chief Architect And Executive Chairperson | Subsequent Event
Subsequent Event [Line Items]
Annual salary | $	$ 504,000
Forecast | Chief Executive Officer | Subsequent Event
Subsequent Event [Line Items]
Annual salary | $	$ 504,000