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Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES: |  |  |  |  |
Net earnings |  |  | $ 23,673 | $ 24,125 |
Adjustments to reconcile net earnings to net cash flow provided by operating activities: |  |  |  |  |
Depreciation and amortization expense | $ 7,325 | $ 6,151 | 14,422 | 12,250 |
Impairment charges |  |  | 1,538 | 1,472 |
(Gain) loss on dispositions of real estate |  |  | (1,056) | (376) |
Deferred rent receivable |  |  | (1,628) | (1,785) |
Amortization of above-market and below-market leases |  |  | (180) | (342) |
Amortization of investment in direct financing leases |  |  | 2,021 | 1,695 |
Amortization of debt issuance costs |  |  | 521 | 470 |
Accretion expense |  |  | 922 | 1,032 |
Stock-based compensation |  |  | 1,600 | 1,139 |
Changes in assets and liabilities: |  |  |  |  |
Accounts receivable |  |  | (1,045) | 191 |
Prepaid expenses and other assets |  |  | (915) | (612) |
Environmental remediation obligations |  |  | (4,602) | (4,431) |
Accounts payable and accrued liabilities |  |  | (2,482) | (1,573) |
Net cash flow provided by operating activities |  |  | 32,789 | 33,255 |
CASH FLOWS FROM INVESTING ACTIVITIES: |  |  |  |  |
Property acquisitions |  |  | (68,671) | (29,700) | $ (87,157)
Capital expenditures |  |  | (23) |  |
Addition to construction in progress |  |  | (96) | (430) |
Proceeds from dispositions of real estate |  |  | 1,181 | 592 |
Deposits for property acquisitions |  |  | 940 | 27 |
(Issuance) of notes and mortgages receivable |  |  | (2,131) | (470) |
Collection of notes and mortgages receivable |  |  | 3,835 | 2,803 |
Net cash flow (used in) investing activities |  |  | (64,965) | (27,178) |
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |  |  |
Borrowings under credit agreement |  |  | 65,000 | 35,000 |
Repayments under credit agreement |  |  | (10,000) | (40,000) |
Payment of finance lease obligations |  |  | (312) | (259) |
Security deposits received (refunded) |  |  | 51 | (271) |
Payments of cash dividends |  |  | (30,779) | (28,332) |
Payments in settlement of restricted stock units |  |  | (244) | (115) |
Net cash flow provided by (used in) financing activities |  |  | 35,632 | (27,314) |
Change in cash, cash equivalents and restricted cash |  |  | 3,456 | (21,237) |
Cash, cash equivalents and restricted cash at beginning of period |  |  | 23,664 | 48,742 | 48,742
Cash, cash equivalents and restricted cash at end of period | $ 27,120 | $ 27,505 | 27,120 | 27,505 | $ 23,664
Supplemental disclosures of cash flow information Cash paid during the period for: |  |  |  |  |
Interest |  |  | 12,754 | 11,575 |
Income taxes |  |  | 290 | 247 |
Environmental remediation obligations |  |  | 3,374 | 3,872 |
Non-cash transactions: |  |  |  |  |
Dividends declared but not yet paid |  |  | 15,768 | 14,628 |
Issuance of notes and mortgages receivable related to property dispositions |  |  | 792 | 926 |
ATM Program [Member] |  |  |  |  |
CASH FLOWS FROM FINANCING ACTIVITIES: |  |  |  |  |
Proceeds from issuance of common stock, net |  |  | $ 11,916 | $ 6,663 |

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