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Mezzanine and Stockholders' Equity - Additional Information (Detail) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 30, 2018 | Mar. 21, 2018 | Mar. 31, 2018 | Jun. 30, 2018 | Dec. 31, 2017
Shares Issued, Price Per Share |  | $ 16.80 |  |  |
Treasury Stock, Common, Shares |  |  |  | 1,682,110 | 1,682,110
Stock Issued During Period, Shares, Issued for Services |  | 37,593 |  |  |
Stock Issued During Period, Value, Issued for Services |  | $ 631,562 |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Cashless Options, Exercises in Period |  |  |  | 60,536 |
Share-based Compensation Arrangement by Share-based Payment Award, Cashless Options, Exercises in Period, Net |  |  |  | 47,576 |
Share-based Compensation Arrangement by Share-based Payment Award, warrants, Exercises in Period |  |  |  | 210,625 |
Warrant Issued During Period, Value, Stock Options Exercised |  |  |  | $ 1,500,000 |
Dividends | $ 10,000,000 |  |  |  |
Dividends Payable |  |  |  | 8,000,000 |
Restricted Cash Acquired from Acquisition |  |  |  | $ 8,000,000 | $ 18,000,000
Minimum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price |  |  |  | $ 0.01 |
Share-based Compensation Arrangement by Share-based Payment Award, Warrant, Exercisable, Weighted Average Exercise Price |  |  |  | 4.00 |
Maximum [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price |  |  |  | $ 10.00 |
Share-based Compensation Arrangement by Share-based Payment Award, Warrant, Exercisable, Weighted Average Exercise Price |  |  |  | 10.00 |
Stock Compensation Plan [Member] |  |  |  |  |
Share based Compensation Arrangement By Share based Payment Award Options Grant Weighted Average Remaining Contractual Term |  |  |  | 1 year 3 months |
APC Shareholders [Member] |  |  |  |  |
Dividends |  |  | $ 2,000,000 |  |
Former Shareholders of NMM [Member] |  |  |  |  |
Shares, Outstanding |  |  |  | 751,067 |
Network Medical Management, Inc 'NMM' [Member] | Stock Compensation Plan [Member] |  |  |  |  |
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized |  |  |  | $ 1,011,910 |
Allied Pacific of California [Member] |  |  |  |  |
Treasury Stock, Common, Shares |  |  |  | 1,682,110 |
APC Stock Option [Member] |  |  |  |  |
Stock Issued During Period, Value, Stock Options Exercised |  |  |  | $ 817,000 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period |  |  |  | 240,500 |

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