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CONSOLIDATED STATEMENTS OF CASH FLOWS - Unaudited - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2018 | Sep. 30, 2017
OPERATING ACTIVITIES |  |
Net Income | $ 70,053 | $ 65,922
Adjustments to reconcile net income to net cash provided by operating activities: |  |
Depreciation and amortization | 67,463 | 62,101
Stock-based compensation expense | 4,033 | 4,266
Net gain on sales of real estate investments and non-operating real estate | (14,359) | (21,815)
Gain on casualties and involuntary conversion | (1,150) | 0
Changes in operating assets and liabilities: |  |
Accrued income and other assets | 628 | 881
Accounts payable, accrued expenses and prepaid rent | 13,997 | 10,586
Other | 1,330 | 765
NET CASH PROVIDED BY OPERATING ACTIVITIES | 141,995 | 122,706
INVESTING ACTIVITIES |  |
Development and value-add properties | (118,489) | (80,462)
Purchases of real estate | (52,934) | (36,739)
Real estate improvements | (26,779) | (18,783)
Net proceeds from sales of real estate investments and non-operating real estate | 24,508 | 39,934
Proceeds from casualties and involuntary conversion | 1,483 | 0
Repayments on mortgage loans receivable | 1,977 | 96
Changes in accrued development costs | 1,896 | 2,032
Changes in other assets and other liabilities | (9,804) | (10,835)
NET CASH USED IN INVESTING ACTIVITIES | (178,142) | (104,757)
FINANCING ACTIVITIES |  |
Proceeds from unsecured bank credit facilities | 311,641 | 281,342
Repayments on unsecured bank credit facilities | (336,789) | (255,988)
Proceeds from Unsecured Debt | 60,000 | 0
Repayments on Unsecured Debt | (50,000) | 0
Repayments on secured debt | (8,410) | (55,478)
Debt issuance costs | (1,857) | (129)
Distributions paid to stockholders (not including dividends accrued) | (45,449) | (64,623)
Proceeds from common stock offerings | 112,325 | 78,956
Proceeds from dividend reinvestment plan | 166 | 170
Other | (5,239) | (2,711)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES | 36,388 | (18,461)
INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 241 | (512)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD | 16 | 522
CASH AND CASH EQUIVALENTS AT END OF PERIOD | 257 | 10
SUPPLEMENTAL CASH FLOW INFORMATION |  |
Cash paid for interest, net of amount capitalized of $4,545 and $4,242 for 2018 and 2017, respectively | $ 23,112 | $ 24,978

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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration