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v3.23.1

Stock Acquisition Rights, Stock Options and Warrants - Narrative (Details) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
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Dec. 02, 2022 installment $ / shares shares | May 30, 2022 shares | May 18, 2022 shares | May 17, 2022 installment $ / shares shares | Sep. 07, 2021 installment $ / shares shares | Aug. 23, 2021 installment $ / shares shares | Jun. 30, 2021 shares | Feb. 01, 2021 shares | Jan. 01, 2021 shares | Dec. 30, 2020 shares | Sep. 30, 2020 USD ($) shares | Jun. 24, 2020 shares | Feb. 28, 2020 shares | Sep. 15, 2014 USD ($) $ / shares shares | May 31, 2021 USD ($) shares | May 31, 2020 USD ($) shares | Mar. 31, 2023 USD ($) $ / shares shares | Mar. 31, 2022 USD ($) $ / shares shares | Mar. 31, 2021 USD ($) $ / shares shares | Mar. 31, 2020 $ / shares | Jun. 30, 2022 shares | Sep. 29, 2021 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,177,000 | $ 39,525,000 | $ 39,302,000 |  |  |
Product development |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,439,000 | 3,593,000 | 4,343,000 |  |  |
Sales and support |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,733,000 | 4,461,000 | 2,942,000 |  |  |
Non-cash compensation expense attributable to stock awards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 17,874,000 | $ 13,625,000 | $ 15,925,000 |  |  |
Granted (in dollars per share) | $ / shares | $ 49.39 |  |  | $ 49.39 | $ 60.92 | $ 57.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of vesting installments | installment | 4 |  |  | 4 | 3 | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares repurchased (in shares) | shares |  |  |  |  |  |  | 20,132 |  |  |  |  |  |  |  | 20,132 |  | 216,000 | 252,000 | 0 |  |  |
Decrease in APIC |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 |  |  |  |  |  |  |
Stock repurchase program, authorized amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 50,000,000
Stock repurchase program, remaining authorized repurchase amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 26,800,000 |  |  |  |  |
Sale of stock (in shares) | shares |  | 500,000 | 500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common Class B Units | PDV Spectrum Holding Company, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investee, cumulative proceeds received on all transactions |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,000,000 |  |  |  |  |  |  |  |
Sale of stock (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |
Sale of stock (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20.00 |  |  |  |  |  |  |  |
Common Class A |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of units owned |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |
Shares registered for resale (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |
Common Class A | PDV Spectrum Holding Company, LLC |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Subsidiary equity units for which investor has right to convert to common stock (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |
President and Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options granted (in shares) | shares | 77,102 |  |  | 122,449 | 65,768 | 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Executive Chairman |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options granted (in shares) | shares | 154,203 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease Agreements, 900 MHz [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | $ 100,000 |  |  |  |
Stock options, contractual life |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 years |  |  |  |
Restricted Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,500,000 | 10,900,000 | $ 9,700,000 | $ 9,200,000 |  |  |
General and administrative |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,800,000 | 8,500,000 | 8,400,000 |  |  |
Product development |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 600,000 | 700,000 | 600,000 |  |  |
Sales and support |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 | 500,000 | 200,000 |  |  |
Plan modification, incremental cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 |  |  |
Awards issued | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 28,000 | 255,912 |  |  |  |  |
Unvested compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,500,000 | $ 18,400,000 |  |  |  |
Weighted average period of recognition of unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 years 3 months 21 days | 2 years 6 months 10 days |  |  |  |
Awards forfeited | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17,508 |  |  |  |  |
Performance-Based Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |
Awards issued | shares |  |  |  |  |  |  |  |  |  |  | 91,216 |  | 95,538 |  |  |  | 0 |  |  |  |  |
Non-cash compensation expense attributable to stock awards |  |  |  |  |  |  |  |  |  |  | $ 4,300,000 |  |  |  |  |  |  |  |  |  |  |
Awards forfeited | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 |  | 47,768 |  |  |
Expected term |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility rate |  |  |  |  |  |  |  | 56.09% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate |  |  |  |  |  |  |  | 0.29% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend yield |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Forfeiture rate |  |  |  |  |  |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | First Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | Second Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | Cumulative Spectrum Proceeds Monetized | Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000 | $ 300,000 | $ 100,000 |  |  |
Unvested compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 800,000 | $ 800,000 |  |  |  |
Weighted average period of recognition of unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 5 months 26 days | 2 years 5 months 26 days |  |  |  |
Measurement period |  |  |  |  |  |  |  |  |  |  |  | 4 years |  |  |  |  |  |  |  |  |  |
Vesting if target metric achieved (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 30,049 |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | Cumulative Spectrum Proceeds Monetized | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage share payout |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |  |
Performance-Based Restricted Stock Units | Cumulative Spectrum Proceeds Monetized | Minimum | Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting if target metric achieved (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 15,025 |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | Cumulative Spectrum Proceeds Monetized | Maximum | Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage share payout |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200.00% |  |  |  |  |
Vesting if target metric achieved (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  | 60,098 |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | TSR | President and Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000,000 | $ 1,000,000 | $ 200,000 |  |  |
Unvested compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,300,000 | $ 2,300,000 |  |  |  |
Weighted average period of recognition of unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 11 months 4 days | 2 years 11 months 4 days |  |  |  |
Vesting if target metric achieved (in shares) | shares |  |  |  |  |  |  |  | 45,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | TSR | Minimum | President and Chief Executive Officer | First Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | TSR | Minimum | Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage share payout |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |
Performance-Based Restricted Stock Units | TSR | Maximum | President and Chief Executive Officer | First Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  | 350.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | TSR | Maximum | Chief Executive Officer |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage share payout |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 350.00% |  |  |  |  |
Performance-Based Restricted Stock Units | Additional |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Awards issued | shares |  |  |  |  |  |  |  |  |  |  |  |  | 43,446 |  |  |  |  |  |  |  |  |
Performance-Based Restricted Stock Units | Additional | First Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |
Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average period of recognition of unrecognized compensation cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 year 8 months 4 days | 1 year 5 months 19 days |  |  |  |
Options granted (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 476,208 |  |  |  |  |
Granted (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 49.39 |  |  |  |  |
Expected term | 5 years 5 months 4 days |  |  | 5 years 5 months 4 days | 5 years 11 months 1 day | 6 years 7 days |  |  |  |  |  |  |  |  |  |  | 5 years 5 months 4 days |  | 6 years 25 days |  |  |
Expected volatility rate | 50.80% |  |  | 51.60% | 53.45% | 53.18% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Risk-free interest rate | 3.62% |  |  | 2.95% | 0.96% | 0.92% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend yield | 0.00% |  |  | 0.00% | 0.00% | 0.00% |  |  |  |  |  |  |  |  |  |  | 0.00% | 0.00% | 0.00% |  |  |
Forfeiture rate | 0.00% |  |  | 0.00% | 0.00% | 0.00% |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  |  |  |
Intrinsic value of options exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,200,000 | $ 29,500,000 | $ 5,000,000 |  |  |
Weighted average grant-date fair value per option granted (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 49.39 | $ 58.56 | $ 42.04 |  |  |
Unrecognized compensation cost related to non-vested share options granted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7,400,000 | $ 4,100,000 |  |  |  |
Stock options outstanding | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,402,949 | 1,006,241 |  |  |  |
Stock Options | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years 11 months 1 day |  |  |  |  |
Expected volatility rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.80% | 53.18% | 53.41% |  |  |
Risk-free interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2.95% | 0.92% | 0.43% |  |  |
Forfeiture rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.00% |  | 0.00% |  |  |
Stock Options | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Expected term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 years 7 days |  |  |  |  |
Expected volatility rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.60% | 53.45% | 52.43% |  |  |
Risk-free interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.62% | 0.96% | 0.51% |  |  |
Forfeiture rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.00% |  | 2.00% |  |  |
Service-Based Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 5,600,000 | $ 2,600,000 | $ 1,300,000 |  |  |
Performance-Based Stock Options |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unvested compensation expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | 0 |  |  |  |
Options granted (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  | 67,562 |  |  |  | 0 |  |  |  |  |
Granted (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
Intrinsic value of options exercised |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | 200,000 | 0 |  |  |
Weighted average grant-date fair value per option granted (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 46.85 |  |
Stock options forfeited (in shares) | shares |  |  |  |  |  |  |  |  |  | 33,780 |  |  |  |  |  |  |  |  |  |  |  |
Consulting fees |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 800,000 |  |  |
Stock options outstanding | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 33,782 | 33,782 |  |  |  |
Performance-Based Stock Options | First Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Performance-Based Stock Options | Second Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Performance-Based Stock Options | Additional |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Options granted (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  | 14,635 |  |  |  |  |  |  |  |  |
Performance-Based Stock Options | Additional | First Anniversary |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of vesting for stock granted to employees |  |  |  |  |  |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |
2014 Stock Plan |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock authorized and reserved for issuance (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,027,201 |  |  |  |  |
Shares available | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 502,256 |  |  |  |  |
Percentage of increase in number of shares of common stock issued and outstanding |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  | 5.00% |  |  |  |  |
Additional common stock authorized and reserved for future issuance (in shares) | shares |  |  |  |  |  |  |  |  | 879,216 |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 730 -Section 25 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6472174&loc=d3e58812-109433 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 730 -SubTopic 10 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6420194&loc=d3e21568-108373 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(03) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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