Subsequent Events	12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	17. Subsequent Events ATM Program During January 2017, we sold 168,685 shares of our common stock under the ATM Program, at a weighted average price of $23.16 per share, for gross proceeds of $3.9 million and net proceeds of $3.8 million, after deducting the sales agents’ fee. Amended and Restated Credit Agreement On February 14, 2017, we amended our existing $300 million Credit Facility by entering into a Second Amended and Restated Credit Agreement (the “Amended Credit Agreement”), which provides for a $450.0 million senior unsecured credit facility, comprised of a $350.0 million unsecured revolving credit facility (the "Amended Revolver") and a $100.0 million unsecured term loan facility (the "Amended Term Loan"). The Amended Revolver is scheduled to mature on February 12, 2021, and has two six-month extension options available, and the Amended Term Loan is scheduled to mature on February 14, 2022. Under the terms of the Amended Credit Agreement, we may request additional lender commitments up to an additional aggregate $550.0 million, which may be comprised of additional revolving commitments under the Amended Revolver, an increase to the Amended Term Loan, additional term loan tranches or any combination of the foregoing. Interest on the Amended Credit Agreement, is generally to be paid based upon, at our option, either (i) LIBOR plus an applicable margin that is based upon our leverage ratio or (ii) the Base Rate (which is defined as the highest of (a) the federal funds rate plus 0.50%, (b) the administrative agent’s prime rate or (c) the Eurodollar Rate plus 1.00%) plus an applicable margin that is based on our leverage ratio. The margins for the Amended Revolver range in amount from 1.10% to 1.50% for LIBOR-based loans and 0.10% to 0.50% for Base Rate-based loans, depending on our leverage ratio. The margins for the Amended Term Loan range in amount from 1.20% to 1.70% for LIBOR-based loans and 0.20% to 0.70% for Base Rate-based loans, depending on our leverage ratio. If we attain one additional investment grade rating by one or more of Standard & Poor’s or Moody’s Investor Services to complement our current investment grade Fitch rating, we may elect to convert the pricing structure under the Amended Credit Agreement to be based on such rating. In that event, the margins for the Amended Revolver will range in amount from 0.825% to 1.55% for LIBOR-based loans and 0.00% to 0.55% for Base Rate-based loans, depending on such rating. The margins for the Amended Term Loan will range in amount from 0.90% to 1.75% for LIBOR-based loans and 0.00% to 0.75% for Base Rate-based loans, depending on such rating. In addition to the interest payable on amounts outstanding under the Amended Revolver, we are required to pay an applicable facility fee, based upon our leverage ratio, on each lender's commitment amount under the Amended Revolver, regardless of usage. The applicable facility fee will range in amount from 0.15% to 0.30%, depending on our leverage ratio. In the event that we convert the pricing structure to be based on an investment-grade rating, the applicable facility fee will range in amount from 0.125% to 0.30%, depending on such rating. Acquisition On February 17, 2017, we acquired a property located at 28901-28903 Avenue Paine in Valencia, California for a contract price of approximately $17.1 million using available cash on hand and borrowings under our Revolver. The property consists of one single-tenant building with 111,346 rentable square feet.

17. Subsequent Events

ATM Program

During January 2017, we sold 168,685 shares of our common stock under the ATM Program, at a weighted average price of $23.16 per share, for gross proceeds of $3.9 million and net proceeds of $3.8 million, after deducting the sales agents’ fee.

Amended and Restated Credit Agreement

On February 14, 2017, we amended our existing $300 million Credit Facility by entering into a Second Amended and Restated Credit Agreement (the “Amended Credit Agreement”), which provides for a $450.0 million senior unsecured credit facility, comprised of a $350.0 million unsecured revolving credit facility (the "Amended Revolver") and a $100.0 million unsecured term loan facility (the "Amended Term Loan"). The Amended Revolver is scheduled to mature on February 12, 2021, and has two six-month extension options available, and the Amended Term Loan is scheduled to mature on February 14, 2022. Under the terms of the Amended Credit Agreement, we may request additional lender commitments up to an additional aggregate $550.0 million, which may be comprised of additional revolving commitments under the Amended Revolver, an increase to the Amended Term Loan, additional term loan tranches or any combination of the foregoing.

Interest on the Amended Credit Agreement, is generally to be paid based upon, at our option, either (i) LIBOR plus an applicable margin that is based upon our leverage ratio or (ii) the Base Rate (which is defined as the highest of (a) the federal funds rate plus 0.50%, (b) the administrative agent’s prime rate or (c) the Eurodollar Rate plus 1.00%) plus an applicable margin that is based on our leverage ratio. The margins for the Amended Revolver range in amount from 1.10% to 1.50% for LIBOR-based loans and 0.10% to 0.50% for Base Rate-based loans, depending on our leverage ratio. The margins for the Amended Term Loan range in amount from 1.20% to 1.70% for LIBOR-based loans and 0.20% to 0.70% for Base Rate-based loans, depending on our leverage ratio.

If we attain one additional investment grade rating by one or more of Standard & Poor’s or Moody’s Investor Services to complement our current investment grade Fitch rating, we may elect to convert the pricing structure under the Amended Credit Agreement to be based on such rating. In that event, the margins for the Amended Revolver will range in amount from 0.825% to 1.55% for LIBOR-based loans and 0.00% to 0.55% for Base Rate-based loans, depending on such rating. The margins for the Amended Term Loan will range in amount from 0.90% to 1.75% for LIBOR-based loans and 0.00% to 0.75% for Base Rate-based loans, depending on such rating.

In addition to the interest payable on amounts outstanding under the Amended Revolver, we are required to pay an applicable facility fee, based upon our leverage ratio, on each lender's commitment amount under the Amended Revolver, regardless of usage. The applicable facility fee will range in amount from 0.15% to 0.30%, depending on our leverage ratio. In the event that we convert the pricing structure to be based on an investment-grade rating, the applicable facility fee will range in amount from 0.125% to 0.30%, depending on such rating.

Acquisition

On February 17, 2017, we acquired a property located at 28901-28903 Avenue Paine in Valencia, California for a contract price of approximately $17.1 million using available cash on hand and borrowings under our Revolver. The property consists of one single-tenant building with 111,346 rentable square feet.