Real Estate and Intangibles - Proforma Financial Information of Future Operating Results (Detail Parenthetical) - USD ($) $ in Millions |
12 Months Ended | |
---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
|
ICE – Albuquerque and NPS – Omaha and DEA – Birmingham and FBI – Birmingham and EPA – Kansas City and FBI – Albany and AOC – South Bend [Member] | ||
Real Estate Properties [Line Items] | ||
Property acquisition costs | $ 1.8 | |
DOE - Lakewood and AOC - Aberdeen and ICE - Otay and DEA - Pleasanton and USCIS - Lincoln and DEA - Dallas Lab and FBI - Richmond [Member] | ||
Real Estate Properties [Line Items] | ||
Property acquisition and formation costs | $ 4.6 |