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Equity | 6 Months Ended
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Jun. 30, 2019
Equity |
Equity | ​ Note 7 — Equity ​ Statement of Stockholders’ Equity ​ The following tables present the changes in Stockholders’ Equity: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Accumulated |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Additional | ​ | ​ | ​ | ​ | Other | ​ | ​ | ​
​ | ​ | Common Stock | ​ | Treasury Stock | ​ | Paid-in | ​ | Accumulated | ​ | Comprehensive | ​ | ​ | ​
​ | ​ | Shares | ​ | Amount | ​ | Shares |  | Amount | ​ | Capital | ​ | Deficit | ​ | Income | ​ | Total
​ | ​ | (in thousands)
Balance at December 31, 2018 |  | 48,547 | ​ | $ | 485 | ​ | ​ | 523 | ​ | $ | (5,872) | ​ | $ | 1,061,325 | ​ | $ | (619,983) | ​ | $ | 1,820 | ​ | $ | 437,775
Net loss |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (18,530) | ​ |  | — | ​ |  | (18,530)
Other comprehensive income, net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 38 | ​ |  | 38
Share-based compensation expense |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 3,157 | ​ |  | — | ​ |  | — | ​ |  | 3,157
Net issuance under employee stock plans |  | 128 | ​ | ​ | 2 | ​ | ​ | (523) | ​ | ​ | 5,872 | ​ | ​ | (6,303) | ​ | ​ | (213) | ​ | ​ | — | ​ | ​ | (642)
Balance at March 31, 2019 |  | 48,675 | ​ | $ | 487 | ​ | ​ | — | ​ | $ | — | ​ | $ | 1,058,179 | ​ | $ | (638,726) | ​ | $ | 1,858 | ​ | $ | 421,798
Net loss |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (15,565) | ​ |  | — | ​ |  | (15,565)
Other comprehensive income, net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 20 | ​ |  | 20
Share-based compensation expense |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 4,588 | ​ |  | — | ​ |  | — | ​ |  | 4,588
Net issuance under employee stock plans |  | 296 | ​ | ​ | 3 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 182 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 185
Balance at June 30, 2019 |  | 48,971 | ​ | $ | 490 | ​ | ​ | — | ​ | $ | — | ​ | $ | 1,062,949 | ​ | $ | (654,291) | ​ | $ | 1,878 | ​ | $ | 411,026
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​ | ​ | ​ |  | ​ | ​ |  | ​ | ​ |  | Accumulated |  | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Additional | ​ | ​ | ​ | ​ | Other | ​ | ​ | ​
​ | ​ | Common Stock | ​ | Treasury Stock | ​ | Paid-in | ​ | Accumulated | ​ | Comprehensive | ​ | ​ | ​
​ | ​ | Shares | ​ | Amount | ​ | Shares |  | Amount | ​ | Capital | ​ | Deficit | ​ | Income | ​ | Total
​ | ​ | (in thousands)
Balance at December 31, 2017 |  | 48,229 | ​ | $ | 482 | ​ | ​ | 85 | ​ | $ | (1,284) | ​ | $ | 1,051,953 | ​ | $ | (212,870) | ​ | $ | 1,812 | ​ | $ | 840,093
Net loss |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (15,827) | ​ |  | — | ​ |  | (15,827)
Other comprehensive income, net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 24 | ​ |  | 24
Share-based compensation expense |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 4,537 | ​ |  | — | ​ |  | — | ​ |  | 4,537
Net issuance under employee stock plans | ​ | 462 | ​ | ​ | 5 | ​ | ​ | (115) | ​ | ​ | 1,728 | ​ | ​ | (2,159) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (426)
Purchases of common stock | ​ | — | ​ |  | — | ​ |  | 30 | ​ |  | (444) | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (444)
Balance at March 31, 2018 |  | 48,691 | ​ | $ | 487 | ​ | ​ | — | ​ | $ | — | ​ | $ | 1,054,331 | ​ | $ | (228,697) | ​ | $ | 1,836 | ​ | $ | 827,957
Net loss |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (237,634) | ​ |  | — | ​ |  | (237,634)
Other comprehensive income, net of tax |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (24) | ​ |  | (24)
Share-based compensation expense |  | — | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | 4,904 | ​ |  | — | ​ |  | — | ​ |  | 4,904
Net issuance under employee stock plans | ​ | 43 | ​ | ​ | — | ​ | ​ | (57) | ​ | ​ | 865 | ​ | ​ | (1,273) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (408)
Purchases of common stock | ​ | — | ​ |  | — | ​ |  | 57 | ​ | ​ | (865) | ​ |  | — | ​ |  | — | ​ |  | — | ​ |  | (865)
Balance at June 30, 2018 |  | 48,734 | ​ | $ | 487 | ​ | ​ | — | ​ | $ | — | ​ | $ | 1,057,962 | ​ | $ | (466,331) | ​ | $ | 1,812 | ​ | $ | 593,930
​ Accumulated Other Comprehensive Income (“AOCI”) ​ The following table presents the changes in the balances of each component of AOCI, net of tax: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Unrealized | ​ | ​ | ​
​ | ​ | ​ | ​ | Gains (Losses) | ​ | ​ | ​
​ | ​ | Foreign | ​ | on Available | ​ | ​ | ​
​ | ​ | Currency | ​ | for Sale | ​ | ​ | ​
​ |  | Translation |  | Securities |  | Total
​ | ​ | (in thousands)
Balance - December 31, 2018 | ​ | $ | 1,836 | ​ | $ | (16) | ​ | $ | 1,820
Other comprehensive income (loss) | ​ |  | 13 | ​ |  | 45 | ​ |  | 58
Balance - June 30, 2019 | ​ | $ | 1,849 | ​ | $ | 29 | ​ | $ | 1,878
​ There were minimal reclassifications from AOCI into net income for the three and six months ended June 30, 2019 and 2018.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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