Revolving Credit Facility and Notes Payable	12 Months Ended
Dec. 31, 2018
Revolving Credit Facility and Notes Payable [Abstract]
Revolving Credit Facility and Notes Payable	8.Revolving Credit Facility and Notes Payable: Our Second Restated Credit Agreement with Frost Bank (“Frost”) dated June 30, 2015, as amended to date, provides a $15.0 million revolving credit facility (“Facility A”), with a $5.0 million letter of credit sub-facility. The outstanding balance of the Facility A bears interest at a rate equal to the prime rate or LIBOR plus 2.5%, at our election. We pay an annual fee of 0.25% of the average daily unused balance of Facility A and letter of credit fees at the rate of 1.00% per annum. All principal and accrued interest on Facility A becomes due and payable on June 30, 2020. As of December 31, 2018, we had no outstanding borrowings under Facility A. The Second Restated Credit Agreement with Frost also provides a $30.0 million revolving credit facility (“Facility B”), in addition to Facility A. We may use Facility B loan proceeds solely for the purpose of making capital contributions to AHIC and HIC. We may borrow, repay and reborrow under Facility B until December 17, 2019, at which time all amounts outstanding under Facility B are converted to a term loan. Through December 17, 2019, we pay Frost a quarterly fee of 0.25% per annum of the average daily unused balance of Facility B. Facility B bears interest at a rate equal to the prime rate or LIBOR plus 3.00%, at our election. Until December 17, 2019, interest only on amounts from time to time outstanding under Facility B are payable quarterly. Any amounts outstanding on Facility B as of December 17, 2019 are converted to a term loan payable in quarterly installments over five years based on a seven year amortization of principal plus accrued interest. All remaining principal and accrued interest on Facility B become due and payable on December 17, 2024. As of December 31, 2018, we had $30.0 million outstanding under Facility B. The obligations under both Facility A and Facility B are secured by a security interest in the capital stock of AHIC and HIC. Both Facility A and Facility B contain covenants that, among other things, require us to maintain certain financial and operating ratios and restrict certain distributions, transactions and organizational changes. We are in compliance with all of these covenants.

8.Revolving Credit Facility and Notes Payable:

Our Second Restated Credit Agreement with Frost Bank (“Frost”) dated June 30, 2015, as amended to date, provides a $15.0 million revolving credit facility (“Facility A”), with a $5.0 million letter of credit sub-facility. The outstanding balance of the Facility A bears interest at a rate equal to the prime rate or LIBOR plus 2.5%, at our election. We pay an annual fee of 0.25% of the average daily unused balance of Facility A and letter of credit fees at the rate of 1.00% per annum. All principal and accrued interest on Facility A becomes due and payable on June 30, 2020. As of December 31, 2018, we had no outstanding borrowings under Facility A.

The Second Restated Credit Agreement with Frost also provides a $30.0 million revolving credit facility (“Facility B”), in addition to Facility A. We may use Facility B loan proceeds solely for the purpose of making capital contributions to AHIC and HIC. We may borrow, repay and reborrow under Facility B until December 17, 2019, at which time all amounts outstanding under Facility B are converted to a term loan. Through December 17, 2019, we pay Frost a quarterly fee of 0.25% per annum of the average daily unused balance of Facility B. Facility B bears interest at a rate equal to the prime rate or LIBOR plus 3.00%, at our election. Until December 17, 2019, interest only on amounts from time to time outstanding under Facility B are payable quarterly. Any amounts outstanding on Facility B as of December 17, 2019 are converted to a term loan payable in quarterly installments over five years based on a seven year amortization of principal plus accrued interest. All remaining principal and accrued interest on Facility B become due and payable on December 17, 2024. As of December 31, 2018, we had $30.0 million outstanding under Facility B.

The obligations under both Facility A and Facility B are secured by a security interest in the capital stock of AHIC and HIC. Both Facility A and Facility B contain covenants that, among other things, require us to maintain certain financial and operating ratios and restrict certain distributions, transactions and organizational changes. We are in compliance with all of these covenants.